Date:         Mon, 5 Jul 1999 11:40:01 -0400
Reply-To:     Caston/Payne <happycampers@PICUSNET.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Caston/Payne <happycampers@PICUSNET.COM>
Subject:      Re: 85 Vanagon power loss
Comments: To: john schaper <tahljohn@NETSCAPE.NET>
In-Reply-To:  <19990705030635.16078.qmail@www0y.netaddress.usa.net>
Content-Type: text/plain; charset="us-ascii"

Sounds like its running rich. Like the ECU thinks it's still "cold".

>2.  O2 sensor is about 4 months old.

Generic or specific O2 sensor? If its a generic, make absolutely sure that
your splice is a good one (solder is better). I put a generic on mine and
about 3 months later went to the non-splice version and it helped a bunch.
Only about $30 difference on our 85's as we have the single wire type. Ken
just wrote something on this issue. And one other thing. If you do not have
the factory connector on you O2 sensor between the sensor and ECU wiring
harnes, make sure that the sheilding foil of the green (i think) wire isn't
coming in contact with to core of the wire. This causes a bad signal to the
ECU as well. This is apparently a very small coaxial type of wire and some
folks just strip it, twist toghether and go; but this "grounds out" that
circut and the signal can't get to the ECU.

>3.  Replaced Temp Sensor II--no affect on problem
make sure that the contact within the connectors is good. On mine I had
this problem and a couple of downward tweaks on the contact pins of the
sensor improved the contact between the pins of the sensor and harness and
fixed the problem.

>5.  Went to Bentley's and did the multimeter checks, for
>    the fuel injection system, Section 24, I think,
>    things looked OK, but on the ECU plug the ohms for
>    the temp sensor I was extremely low, although at
>    pin 2 and 4 on the sensor itself, the ohms were
>    within limits.
For Temp I, pins to check are 14 and 6 with ambient air temp inside AFM
around 68 degrees and read 2300-2700 ohms. This could be a faulty wire or
just a loose connection within the harness. Push slightly downward (or
upward) to improve the contact and see if you get good reading on the
harness now. Never heard of much trouble with temp I's though.

For Temp II at 68 degrees you should get reading of 2300-2700 ohms at pins
2 and 7.
Hope this helps,

Dave & Sherrie
Williamsburg, VA
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